Wiring Harness: Service and Repair
Automatic Transmission Wiring Harness ReplacementRemoval Procedure
1. Remove the control valve body cover.
2. Disconnect the wiring harness connectors (1-8).
3. Remove the fluid temperature sensor bolt (31).
4. Remove the fluid temperature sensor clamp (49).
5. Remove the fluid temperature sensor (36) and the O-ring (32) from the control valve body.
6. Remove the A/T control wiring harness connector retainer (69).
7. Remove the transmission wiring harness assembly (33) from the transmission case assembly through the wiring harness bore.
8. Remove the TCM seal (72) and the automatic transmission wiring connector seal (46) from the connector.
Installation Procedure
1. Apply GM T-IV automatic transaxle fluid GM P/N 88900925 to a NEW transaxle wiring connector O-ring seal (46).
2. Install the NEW automatic transmission wiring connector seal (46) in the bore for the connector. The taper side of the seal goes up.
3. Install a NEW TCM seal (72) on the connector.
4. Install the transmission wiring harness assembly (33) into the transmission case assembly through the wiring harness bore.
5. Align the tab of the connector in the transmission case.
6. Install the wiring harness connector retainer (69).
7. Apply GM T-IV automatic transaxle fluid GM P/N 88900925 to a new transaxle fluid temperature sensor O-ring seal (32).
8. Install a new transaxle fluid temperature sensor O-ring seal (32) into the groove of the transaxle fluid temperature sensor (36).
9. Install the transaxle fluid temperature sensor (36) into the front control valve body fluid temperature sensor bore.
10. Install the transaxle fluid temperature sensor clip (49).
11. Install the fluid temperature sensor bolt (31).
Tightening torque
Tighten the bolt to 10 Nm (89 in. lbs.).
12. Connect the 8 solenoid wire connectors as follows:
^ 1 blue
^ 2 black
^ 3 green
^ 4 black
^ 5 blue
^ 6 gray
^ 7 brown
^ 8 black
13. Install the control valve body cover.
14. Perform the transmission adaptive learn procedure.